Feeding  mechanism fob sawiwg-machiites



Q7/ K zZ//i Y A M. FHQTO- LIT H 0.!10. NX- (U SEUR N E'S PRUCESS) j passes through the post E, above which it is nur orion.

PHILIP P. WEIS AND F. SCHUTTE, OF PHILADELPHIA, PENNSYLVANIA.

FEEDING IVIECHANISM FOR SAWING-MACI-IINES.

Specification of Letters Patent No.

To all whom it may concern:

Beit known that we, PHILIP P. WEIS and FRANCIS SCHUTTE, both of the city and county of Philadelphia and State of Pennsylvania, have invented a new and Improved Sawingldachine; and we do hereby declare the following to be a full, clear, and eXact description of the same, reference being had to the accompanying drawing and to the letters of reference marked thereon.

Our invention consists in a certain combination of an adjustable frame with rollers, a pressure frame also furnished with rollers, and a feeding screw, the whole being arranged substantially as described hereafter for the purpose of moving the lumber toward the saw, and, at the same time, retaining 1t steadily in its proper position, as it is operated on by the saw.

In order to enable others to malte and use our invention, we will now proceed to describe its construction and operation.

On reference to the accompanying drawing, which forms a part of this specification: Figure l, is a front view of our improved sawing machine. Fig. 2, a sectional elevation, on the line 1, 2 (Fig. l). Fig. 3, a sectional plan, on the line 3, I (Fig. l). Fig. 4, a sectional plan, on the line 5, 6 (Fig. 1).

Similar letters refer to similar parts throughout the several views.

The framework of the machine consists of the four vertical posts A, B, C and D, the posts A and B being secured together at the top by the beam E, and the posts B and D by the beam F.

Near the lower end of the frame and forming part of the same, a table G is erected for receiving the lumber to be sawn.

H and H are the two main shafts of the machine, the lower shaft H turning in suitable boXes permanently secured to the vertical posts A, B and C, and the upper shaft I-I turning in boxes on the frame I, and in a `box on the vertical post C.

The frame I is secured to the vertical posts A and B by means of screws or bolts, which pass through slots in the posts, and thus serve as guides when the frame is raised or lowered by the screw J, which furnished with a nut. The box which forms 23,054, dated February 22, 1859.

the outside bearing of the shaft I-I, is also.

arranged to slide on the vertical post C, so that the shaft H with its boxes can be elevated at pleasure by turning the nut of the screw J. Each of the shafts I-I and H is furnished with a plain pulley K, that of one shaft being in a line with that of the other; and around these pulleys passes an endless band L of tempered steel, on one end of which are cut ordinary saw teeth..

The saw is maintained in its proper lateral position on the ulleys, in one direction by the ianched rol ers e, which are hung to brackets secured to the vertical post D, and in the other direction by the lumber on which the saw operates.

In the table G is an opening for the reception of the screw M, the journals of which turn in recesses on the end of the table. This screw is driven by a belt m, which passes around a pulley a on the same shaft on which is a cone pulley f, driven by a belt from the cone pulley f on the lower main shaft H. A frame N with any convenient number of vertical rollers lz., h, is secured to the table G in such a manner that it can be adjusted Atransversely with the machine and secured iirmly in the position to which it has been adjusted. Another frame P with vertical rollers z' and i directly opposite to the rollers of the adjustable frame N is hung by means of the rods g, g, to the vertical post D, a spring r, secured to the latter, serving to press the frame P toward the adjustable frame.

The board to be sawn is placed with its edge on the screw M, its back bearing' against the rollers it, h, of the adjustable frame N, the spring r pressing the frame P forward, so that its rollers bear against the front face of the board. steadily maintained between the rollers of the two frames. A rapid rotary motion is now imparted to the lower shaft I-I by any The latter is thus j suitable driving apparatus, causing the steel band L, or as we term it the endless band saw, to traverse rapidly in the direction of the arrow. At the same time the screw IWI turns, and its pointed thread, penetrating a short distance into the under edge of the board, moves the latter slowly toward the saw, which cuts the board as it advances.

The thickness cut from the board of course depends upon the position of the adjustable frame N, which may be so adjusted that any thickness may be cut 0E, from an ordinary veneer upward.

It will be readily seen, that the portion of the endless band saw, which operates on the board, is maintained steadily in its proper position and prevented from sagging by the flanched rollers c, and that when the saw becomes inconveniently slack, it may be readily tightened by turning the nut of the screw J, thereby raising the frame I, and with it the pulley K.

In some instances, when the pulleys K are of necessity of small diameter, we propose to pierce the endless band saw with a number of holes to receive projections on the driving PH. P. WEIS. FR. SCHUTTE.

Vitnesses HENRY HowsoN, HENRY ODIORNE. 

